 Under Counting One's Marbles (in Probability)
Posted on 2008-02-18 (5 Comments) |
 |  Solution by Eric (2008-02-21 03:39:38) |
 Under Urn, urn, urn (in Probability)
Posted on 2007-02-20 (5 Comments) |
| Solution by Eric (2007-02-20 22:30:41) |
Under Fifteen Jumbled (in Sequences)
Posted on 2006-12-29 (7 Comments) |
|  The Color of Money (Spoiler!!) by Eric (2006-12-29 19:59:23) |
 Under The art of fencing (in Shapes)
Posted on 2006-12-27 (6 Comments) |
| Five Neighbours by Eric (2006-12-27 18:17:51) |
| re: idea by Eric (2006-12-27 16:18:16) |
Under Square Search (in General)
Posted on 2006-12-21 (5 Comments) |
| re: heuristic computer exploration and Solution by Eric (2006-12-21 15:55:49) |
Under A quaint incongruent integral partitioning conundrum (in Shapes)
Posted on 2006-12-20 (4 Comments) |
| re: Ceiling by Eric (2006-12-20 15:54:43) |
| Ceiling by Eric (2006-12-20 15:34:14) |
Under Horoscope Hijinks II (in General)
Posted on 2006-12-05 (4 Comments) |
| Solution by Eric (2006-12-05 14:18:44) |
Under Parallel Bisections (in Geometry)
Posted on 2006-11-27 (3 Comments) |
| Solution by Eric (2006-11-27 12:23:47) |
Under Angle Trisection (in Geometry)
Posted on 2006-11-09 (6 Comments) |
| Partial Solution by Eric (2006-11-09 21:18:59) |
 Under Going Downtown (in Logic)
Posted on 2006-11-08 (8 Comments) |
| re: Solution by Eric (2006-11-08 22:23:55) |
Under Favorable Numbers (in Numbers)
Posted on 2006-11-02 (5 Comments) |
| Solution by Eric (2006-11-02 12:14:47) |
Under The Holy Cannoli (in Shapes)
Posted on 2006-11-01 (8 Comments) |
| re(2): Integrating the other way by Eric (2006-11-01 20:18:51) |
| Integrating the other way by Eric (2006-11-01 18:42:00) |
Under A Fourth Person Problem (in Liars and Knights)
Posted on 2006-11-01 (16 Comments) |
| re: Solution by Eric (2006-11-03 15:52:44) |
Under Further Descending Integers (in Numbers)
Posted on 2006-10-19 (2 Comments) |
| Solution by Eric (2006-10-19 16:12:58) |
Under On Target (in Geometry)
Posted on 2006-10-09 (7 Comments) |
| Solution by Eric (2006-10-09 19:40:48) |
Under Sort of a sorting problem (in Just Math)
Posted on 2006-08-22 (14 Comments) |
| re(2): For continuous functions... by Eric (2006-08-23 17:26:45) |
| For continuous functions... by Eric (2006-08-22 13:25:47) |
Under Summing or Multiplying (in Numbers)
Posted on 2006-08-21 (21 Comments) |
| Peculiars vs. Primes by Eric (2006-08-22 16:32:36) |
Under Card game (in Games)
Posted on 2006-08-12 (8 Comments) |
| Different Approach by Eric (2006-08-12 16:25:48) |
Under A Definite Integral Problem (in Calculus)
Posted on 2006-08-10 (5 Comments) |
| Solution by Eric (2006-08-10 13:37:48) |
Under Land of Zoz (in Liars and Knights)
Posted on 2006-07-17 (14 Comments) |
| Flaw Edit by Eric (2006-07-18 16:54:08) |
Under Darting on one leg (in Games)
Posted on 2006-06-22 (5 Comments) |
| Answer by Eric (2006-06-23 18:48:58) |
| Question about Number 2 by Eric (2006-06-23 01:08:04) |
Under Covering a circle (extended mix) (in Shapes)
Posted on 2006-06-20 (5 Comments) |
| re(2): Answers by Eric (2006-06-21 00:11:57) |
| Answers by Eric (2006-06-20 17:45:35) |
Under Fiction Novel And Science Book Problem (in Just Math)
Posted on 2006-06-20 (5 Comments) |
| No brutes needed by Eric (2006-06-20 18:04:06) |
Under Arcanum (in Riddles)
Posted on 2006-06-15 (16 Comments) |
| Numbers don't lie, but they sure are magical... by Eric (2006-06-15 23:46:25) |
Under Four Congruent Circles (in Geometry)
Posted on 2006-06-14 (5 Comments) |
| Think BIG then small... like Alice by Eric (2006-06-14 23:43:16) |
Under The Ultimate Cribbage Hand (in Games)
Posted on 2006-06-07 (21 Comments) |
| New Total by Eric (2006-06-07 23:40:52) |
| re(3): Part of the solution by Eric (2006-06-07 23:31:17) |
| re: A Fist Full by Eric (2006-06-07 23:24:21) |
| re: some help from the computer (spoiler) by Eric (2006-06-07 23:15:06) |
Under Trading Places 2D (in Algorithms)
Posted on 2006-06-07 (3 Comments) |
| Ring around the rosy? by Eric (2006-06-08 00:49:06) |
Under The Island of Masyu (in Logic)
Posted on 2006-06-06 (4 Comments) |
| Solution by Eric (2006-06-06 20:28:27) |
Under All Four Suits (in Probability)
Posted on 2006-06-06 (8 Comments) |
| End... by Eric (2006-06-06 23:20:06) |
| Middle... by Eric (2006-06-06 21:46:17) |
| Beginning.. by Eric (2006-06-06 12:08:06) |
Under Tricky sudoku (in Logic)
Posted on 2006-06-05 (7 Comments) |
| Answer by Eric (2006-06-05 13:05:36) |
Under Who? (in Cryptography)
Posted on 2006-06-04 (7 Comments) |
| re(3): solution by Eric (2006-06-05 13:12:21) |
Under A Perfect Square Problem (in Just Math)
Posted on 2006-06-03 (10 Comments) |
| re(2): i cant get it by Eric (2006-06-07 00:10:23) |
Under Relativistic snapshot (in Science)
Posted on 2006-05-26 (12 Comments) |
| re(5): Solution by Eric (2006-06-07 00:21:52) |
Under The Paradox of Relativity (in Science)
Posted on 2006-05-24 (10 Comments) |
| How I understand it... by Eric (2006-05-24 17:25:58) |
Under Kakuro, Sudoku AND Hanji combined (in Logic)
Posted on 2006-05-16 (4 Comments) |
| Answer by Eric (2006-05-16 19:14:20) |
Under Garden Path (in Geometry)
Posted on 2006-05-10 (12 Comments) |
| A bit of a stretch by Eric (2006-05-11 20:24:55) |
Under Tidy Triangle (in Shapes)
Posted on 2006-05-05 (7 Comments) |
| re: If not different by Eric (2006-05-05 22:09:00) |
Under Gravity experiment (in General)
Posted on 2006-05-04 (29 Comments) |
| re(3): Question by Eric (2006-05-08 16:23:30) |
| re(2): Question by Eric (2006-05-08 16:22:01) |
| re: Detailed Solution by Eric (2006-05-05 22:03:27) |
| Drop Plan Part I by Eric (2006-05-05 03:04:00) |
| Solution by Eric (2006-05-05 02:19:37) |
| First thought by Eric (2006-05-04 12:53:36) |
Under Classical Rules 2 (in Numbers)
Posted on 2006-04-20 (4 Comments) |
| re: Partial Solution by Eric (2006-04-20 22:19:40) |
Under Some physics problems? (in Science)
Posted on 2006-04-16 (13 Comments) |
| re(3): E = mc^2 by Eric (2006-04-17 06:44:01) |
Under Simple Origami? (in Shapes)
Posted on 2006-03-07 (9 Comments) |
| re: refining the answer-computer solution by Eric (2006-03-08 02:13:16) |
Under Black and White Solids (in Geometry)
Posted on 2006-03-04 (13 Comments) |
| re: #2- octahedron by Eric (2006-03-04 15:45:11) |
Under A Digital Permutation Problem (in Numbers)
Posted on 2006-02-28 (3 Comments) |
| re: Solution - I'll spare you by Eric (2006-02-28 17:55:03) |
Under Angle ABC (in Geometry)
Posted on 2006-02-25 (17 Comments) |
| re(2): An algebraic solution by Eric (2006-02-26 13:46:53) |
| An algebraic solution by Eric (2006-02-26 03:50:20) |
| re(2): Solution - This is how long it took me: by Eric (2006-02-25 15:15:52) |
| re: Solution - A little jumpy, don't you think? by Eric (2006-02-25 14:41:04) |
Under ABC - easy as 123 (in Cryptography)
Posted on 2006-02-24 (16 Comments) |
|  Spoiler by Eric (2006-02-24 13:58:57) |
Under Wolf in a field (in Algorithms)
Posted on 2006-02-23 (17 Comments) |
| re(2): Okay, then prove this: by Eric (2006-02-23 23:11:16) |
| Okay, then prove this: by Eric (2006-02-23 16:29:02) |
Under Inversion Distance (in Geometry)
Posted on 2006-02-21 (32 Comments) |
| re: Solution: I think I have it right now. by Eric (2006-02-26 04:11:53) |
| re(5): Note to Bractals by Eric (2006-02-25 14:13:42) |
| re(3): Note to Bractals by Eric (2006-02-25 03:08:26) |
| re: Note to Bractals by Eric (2006-02-23 23:34:25) |
| re: Disagreement by Eric (2006-02-23 16:13:58) |
| re(2): problem resolved by Eric (2006-02-22 17:08:39) |
| Now I have it. by Eric (2006-02-22 02:03:52) |
| re: special case? spoiler, perhaps by Eric (2006-02-22 01:50:11) |
| How do I explain this? by Eric (2006-02-21 18:25:24) |
Under The Infinite Drive (in Science)
Posted on 2006-02-18 (5 Comments) |
| Muzzle velocity by Eric (2006-02-18 16:13:01) |
Under Pair of Quadrilaterals (in Shapes)
Posted on 2006-02-17 (3 Comments) |
| Second Quadrilateral and Solution by Eric (2006-02-17 16:45:10) |
| First Quadrilateral by Eric (2006-02-17 16:35:10) |
Under I don't know. (in Cryptography)
Posted on 2006-02-16 (53 Comments) |
| Three things... by Eric (2006-02-18 21:41:35) |
Under Hide and destroy (in Probability)
Posted on 2006-02-15 (14 Comments) |
| Thoughts by Eric (2006-02-15 15:29:16) |
Under Spotty editing (in Probability)
Posted on 2006-02-14 (13 Comments) |
| re(2): Assuming that ... by Eric (2006-02-15 01:21:58) |
Under Harmonic Integers (in Just Math)
Posted on 2006-02-07 (5 Comments) |
| re: I think I have it by Eric (2006-02-08 03:19:25) |
Under Dafoe, The Lone Entrepreneur (in Just Math)
Posted on 2006-01-30 (23 Comments) |
|  re: Starting Point by Eric (2006-01-30 23:44:05) |
| Where I'm at by Eric (2006-01-30 23:33:01) |
Under Euclid Squared (in Sequences)
Posted on 2006-01-26 (4 Comments) |
| Solution by Eric (2006-01-26 16:58:11) |
Under Odometer Sum of the Digits (in Numbers)
Posted on 2006-01-19 (11 Comments) |
| re(2): computer solution by Eric (2006-01-19 19:54:03) |
Under Self-Referential Aptitude Test (in Logic)
Posted on 2006-01-17 (28 Comments) |
| re(3): logic error by Eric (2006-01-28 16:11:17) |
| re: logic error by Eric (2006-01-23 13:51:50) |
| re: Solution? by Eric (2006-01-17 21:49:00) |
| Answers - no explanation by Eric (2006-01-17 14:01:40) |
Under Placing 20 pieces (in General)
Posted on 2006-01-14 (5 Comments) |
| re: a solution by Eric (2006-01-15 22:51:21) |
Under Identify the chess pieces (in Games)
Posted on 2006-01-09 (15 Comments) |
| re(4): Full Solution - not yet by Eric (2006-01-12 18:38:56) |
| re(3): Opening Moves (part spoiler) by Eric (2006-01-10 16:13:06) |
| re: Opening Moves (part spoiler) by Eric (2006-01-09 19:24:01) |
Under No honor among thieves (in Liars and Knights)
Posted on 2006-01-08 (12 Comments) |
| No Subject by Eric (2006-01-08 12:12:47) |
Under Play it again, Sam (in General)
Posted on 2006-01-06 (25 Comments) |
| re(3): Who is Sam? by Eric (2006-01-08 12:31:39) |
| re: Who is Sam? by Eric (2006-01-07 20:09:42) |
| Don't Read This Solution! - it is fun to solve. by Eric (2006-01-06 17:22:44) |
Under A Most Unusual Evaluation (in Just Math)
Posted on 2006-01-04 (3 Comments) |
| re: Rigorous Solution by Eric (2006-01-05 23:34:30) |
Under F-A-C-E (in Word Problems)
Posted on 2006-01-04 (8 Comments) |
| re: making a flash piano by Eric (2006-01-06 05:30:00) |
Under A rational cryptarithm (in Just Math)
Posted on 2005-12-29 (18 Comments) |
| Equivalent Variables? by Eric (2005-12-29 14:53:05) |
Under Cubic Problem: Existence Of A Solution (in General)
Posted on 2005-12-28 (8 Comments) |
| OK I think I pulled the gum out of my brain - Solution by Eric (2005-12-29 01:45:25) |
| Solution! by Eric (2005-12-28 19:37:31) |
Under More Referential Numbers (in Numbers)
Posted on 2005-12-10 (4 Comments) |
| One longer number and some thinking... by Eric (2005-12-10 19:34:33) |
Under Boiling Impossibilities (in Science)
Posted on 2005-12-06 (41 Comments) |
| Watcha got cookin'? by Eric (2005-12-07 03:46:09) |
Under Gone Fishin' (in Calculus)
Posted on 2005-12-05 (6 Comments) |
| re: I hate to be a downer, but... by Eric (2006-01-26 22:11:59) |
Under Spinning disks (in Shapes)
Posted on 2005-12-03 (6 Comments) |
| re: Hint | Spoiler by Eric (2005-12-07 03:26:40) |
| number of sectors by Eric (2005-12-03 16:36:02) |
Under The prisoners and the beans (in Logic)
Posted on 2005-11-27 (43 Comments) |
| re(4):(by pcbouhid): by Eric (2005-12-08 17:24:37) |
| re(2):(by pcbouhid): by Eric (2005-12-08 04:03:27) |
| re: Assume that... by Eric (2005-11-30 20:22:03) |
| re(2): Prisoner's Dilemma Deluxe by Eric (2005-11-30 19:22:50) |
| Prisoner's Dilemma Deluxe by Eric (2005-11-30 02:00:36) |
Under Bat wings (in Shapes)
Posted on 2005-06-08 (14 Comments) |
| re(2): Label the figure (Solution) by Eric (2005-06-09 15:58:17) |
Under An average table (in Just Math)
Posted on 2005-06-03 (10 Comments) |
| re(2): Solution by Eric (2005-06-04 01:25:12) |
| Solution by Eric (2005-06-03 21:09:33) |
 Under The Second Level (in Probability)
Posted on 2005-04-26 (10 Comments) |
| Solution by Eric (2005-04-26 17:30:58) |
Under Colorful Noise (in Cryptography)
Posted on 2005-04-25 (19 Comments) |
| re: meow... by Eric (2005-04-25 23:43:32) |
| Solution by Eric (2005-04-25 20:14:02) |
Under All the Marbles (in Logic)
Posted on 2005-04-22 (18 Comments) |
| re(3): Answer + Solution (explanation) by Eric (2005-04-22 22:14:37) |
| Answer, no solution by Eric (2005-04-22 22:07:35) |
Under Graduation Day (in Liars and Knights)
Posted on 2005-04-18 (6 Comments) |
| Step by Step Solution by Eric (2005-04-18 19:05:51) |
Under Tethered satellites (in Science)
Posted on 2005-04-13 (13 Comments) |
| re: more thoughts by Eric (2005-04-13 22:59:39) |
Under It is infinite if it isn't? (in Paradoxes)
Posted on 2005-04-12 (36 Comments) |
| Solution by Eric (2006-01-09 03:38:21) |
Under Essay Final (in General)
Posted on 2005-04-08 (49 Comments) |
| Solution by Eric (2005-04-08 23:52:46) |
Under Passing Through (in Just Math)
Posted on 2005-04-06 (28 Comments) |
| Solution by Eric (2005-04-06 19:33:19) |
Under Powerful Powers Pileup! (in Just Math)
Posted on 2005-04-03 (3 Comments) |
| re: Intuitive guess by Eric (2005-04-04 20:32:08) |
Under Magic Keyring (in Sequences)
Posted on 2005-03-28 (6 Comments) |
| Rest of Solution by Eric (2005-03-28 23:44:36) |
Under Two false coins (in Weights and Scales)
Posted on 2005-03-25 (11 Comments) |
| Solution by Eric (2005-03-26 18:31:13) |
Under Clueless (in Numbers)
Posted on 2005-03-14 (7 Comments) |
| re(3): Am I clueless? by Eric (2005-03-15 02:28:25) |
| re(2): Am I clueless? by Eric (2005-03-14 23:03:06) |
Under In the year 2525... (in Science)
Posted on 2005-03-14 (9 Comments) |
| re(2): About Nine-tenths of an answer. by Eric (2005-03-14 14:40:21) |
Under Pretty Potent Primes (in Numbers)
Posted on 2005-03-13 (12 Comments) |
| re: I think I've covered the possibilities--Computer Aided Solution by Eric (2005-03-13 18:17:46) |
Under Prime Perimeter (in Logic)
Posted on 2005-03-11 (90 Comments) |
| re(2): Charlie's Skepticism by Eric (2005-03-12 17:00:06) |
| Charlie's Skepticism by Eric (2005-03-12 05:23:59) |
Under Fibonacci Fractions (in Just Math)
Posted on 2005-03-09 (17 Comments) |
| Clear Solution by Eric (2005-03-10 06:40:39) |
Under Primal Magic Square (in General)
Posted on 2004-03-09 (16 Comments) |
|  re(2): lower square - failure by Eric (2004-03-09 21:23:50) |
Under Knight's Tour (2) (in Games)
Posted on 2004-03-06 (13 Comments) |
| techniques by Eric (2004-03-06 14:20:30) |
Under Chess Board Switch (in General)
Posted on 2004-02-28 (15 Comments) |
| re(3): A switch solution - maybe not the optimal one... by Eric (2004-03-06 12:44:15) |
| First Step by Eric (2004-02-28 12:58:51) |
| First Step by Eric (2004-02-28 12:58:50) |
Under A = B = AB (in Word Problems)
Posted on 2004-02-10 (28 Comments) |
| one idea by Eric (2004-02-10 21:38:44) |
Under Annul Choke Widow Nude Whist (in Word Problems)
Posted on 2003-12-27 (8 Comments) |
| re(2): Solution? by Eric (2003-12-27 14:09:36) |
Under Prime real estate (in Sequences)
Posted on 2003-12-24 (7 Comments) |
| very slowly indeed by Eric (2003-12-24 19:08:07) |
Under Non - Zero Digit (in Just Math)
Posted on 2003-12-21 (11 Comments) |
| maybe not everyone... by Eric (2003-12-22 06:22:29) |
Under Proof of Anything (in Logic)
Posted on 2003-12-13 (44 Comments) |
| Self-referential logic saved my life. by Eric (2003-12-14 02:46:32) |
Under Lost the Key (in Logic)
Posted on 2003-12-11 (19 Comments) |
| Solution by Eric (2003-12-11 21:25:33) |
Under The Amazing Stamp (in Geometry)
Posted on 2003-12-01 (45 Comments) |
| re: by Eric (2003-12-01 23:41:24) |
Under Relativistic bullet (in Science)
Posted on 2003-11-28 (20 Comments) |
| re(2): What a doppler effect! by Eric (2003-11-28 22:46:36) |
| re: What a doppler effect! by Eric (2003-11-28 21:59:53) |
| What a doppler effect! by Eric (2003-11-28 19:06:26) |
Under Feed the Birds (in Logic)
Posted on 2003-11-28 (31 Comments) |
| re(2): solution by Eric (2003-11-29 03:44:34) |
Under Sides Of A Triangle (in Just Math)
Posted on 2003-11-23 (15 Comments) |
| re(2): arithmetic progression? by Eric (2003-11-23 12:17:11) |
Under Bull's eye! (in Shapes)
Posted on 2003-11-22 (17 Comments) |
| first thoughts by Eric (2003-11-22 12:41:16) |
Under Cutting Corners (in Shapes)
Posted on 2003-11-20 (16 Comments) |
| sdrawkcabbackwards? by Eric (2003-11-20 15:35:46) |
Under Norse Code (in Word Problems)
Posted on 2003-11-18 (16 Comments) |
| re(2): Paging Dr. Huckstable by Eric (2003-11-20 00:10:20) |
| Paging Dr. Huckstable by Eric (2003-11-19 22:40:27) |
Under Three numbers (in Just Math)
Posted on 2003-11-17 (22 Comments) |
| shaving the sphere by Eric (2003-11-18 21:24:48) |
Under 50 - Digit Number (in Just Math)
Posted on 2003-11-15 (43 Comments) |
| a little more straightforward by Eric (2003-11-16 01:07:26) |
Under Circle in hypotenuse (in Geometry)
Posted on 2003-11-14 (13 Comments) |
| re(2): solution by Eric (2003-11-16 01:23:03) |
Under Strike a Chord (..Any Chord) (in Geometry)
Posted on 2003-10-09 (51 Comments) |
| keep it simple, ... by Eric (2003-10-09 22:52:33) |
Under Landscape Architect (in Shapes)
Posted on 2003-09-27 (9 Comments) |
| Solution by Eric (2003-09-27 13:07:39) |
Under What Happened ? (in Numbers)
Posted on 2003-09-23 (10 Comments) |
| now we are learning by Eric (2003-09-27 13:24:10) |
Under Marbles Bonanza (in Paradoxes)
Posted on 2003-09-08 (87 Comments) |
| I lost my marbles by Eric (2003-09-08 23:34:58) |
Under Lumber Netters (in Numbers)
Posted on 2003-09-08 (13 Comments) |
| Solution to 2 by Eric (2003-09-09 00:15:19) |
Under Towers of Hanoi (in Algorithms)
Posted on 2003-09-07 (22 Comments) |
| Holy Hula Hoops! by Eric (2003-09-07 10:12:37) |
Under Move the 6, Quadruple the Number (in Numbers)
Posted on 2003-09-04 (6 Comments) |
| solution by Eric (2003-09-05 00:27:27) |
Under Words in Common 3 (in Word Problems)
Posted on 2003-09-03 (14 Comments) |
| GOT IT! by Eric (2003-09-08 01:42:03) |
| thinking out loud by Eric (2003-09-07 20:29:14) |
Under Super Number Square (in Numbers)
Posted on 2003-08-19 (10 Comments) |
| solution by Eric (2003-09-05 02:17:34) |
Under Men, Women and Pets (in Logic)
Posted on 2003-02-21 (23 Comments) |
| h is right! - Comprehensive Solution by Eric (2005-04-26 01:05:04) |
Under pH of water again (in Science)
Posted on 2003-02-15 (9 Comments) |
| re: guess by Eric (2003-11-29 22:47:34) |
Under The Letter (in Logic)
Posted on 2002-12-08 (28 Comments) |
| Another Solution by Eric (2005-04-29 02:26:44) |
Under Circular Logic II (in Geometry)
Posted on 2002-07-19 (3 Comments) |
| re: A solution by Eric (2003-09-07 10:01:59) |
Under Self-Descriptor (in Numbers)
Posted on 2002-07-10 (14 Comments) |
| re: 6210001000 by Eric (2003-11-16 00:56:03) |
| re: another possible answer by Eric (2003-11-16 00:55:12) |
Under Coffee and Cream (in General)
Posted on 2002-06-21 (10 Comments) |
| Density by Eric (2005-05-02 22:28:13) |
Under Pearls (in Weights and Scales)
Posted on 2002-05-23 (9 Comments) |
| Solution for any P by Eric (2005-11-29 23:21:44) |
Under A Bookworm’s meal (in General)
Posted on 2002-04-19 (12 Comments) |
| Voila! by Eric (2003-10-22 21:24:50) |
